2061: Odyssey Three

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Halley's apparition of 1456 was also witnessed in Kashmir and depicted in great detail by Śrīvara, a Sanskrit poet and biographer to the Sultans of Kashmir. He read the apparition as a cometary portent of doom foreshadowing the imminent fall of Sultan Zayn al-Abidin (AD 1418/1420–1470). [86]

The first certain appearance of Halley's Comet in the historical record is a description from 240BC, in the Chinese chronicle Records of the Grand Historian or Shiji, which describes a comet that appeared in the east and moved north. [61] The only surviving record of the 164BC apparition is found on two fragmentary Babylonian tablets, now owned by the British Museum. [61] a b Kronk, Gary W. "1P/Halley". cometography.com. Archived from the original on 23 November 2017 . Retrieved 13 October 2008.Halley was the first comet to be recognized as periodic. Until the Renaissance, the philosophical consensus on the nature of comets, promoted by Aristotle, was that they were disturbances in Earth's atmosphere. This idea was disproved in 1577 by Tycho Brahe, who used parallax measurements to show that comets must lie beyond the Moon. Many were still unconvinced that comets orbited the Sun, and assumed instead that they must follow straight paths through the Solar System. [23] Following the rise in bond yields, Richard Woolnough, a bond fund manager at M&G Investments, points out that the TINA argument is dying. He said: “When bond yields were negative they were guaranteed to go nowhere…but now bonds offer reasonable value versus other asset classes. TINA no longer applies. There is an alternative.”

Population growth is a key driver of demand for housing, infrastructure, school places, health care and consumption, and so population projections are essential for the effective planning of these services. Of the components which make up these projections, international migration is the least predictable, yet has a large impact on the size and composition of the population. Our scenarios therefore used different assumptions about future immigration policy. When the comet was first seen, it appeared in the western sky, its head toward the north and tail towards the south, about horizontal and considerably above the horizon and quite a distance south of the Sun. It could be plainly seen directly after sunset every day, and was visible for a long time, perhaps a month ...

or magazine accounts of the progress of the United States and Soviet space programs in the years 1960 to 1985 as a way to measure the degree to which Clarke draws on technology already in use and technology yet to be developed at the time 2061: Odyssey Three was written.

Christopher Floyd II is Floyd's grandson who hops various space flights and quietly finds work without keeping up with his family, to their dismay. He is second officer of the Galaxy, an older craft also financed by the Tsung family. He is estranged from his grandfather Heywood. One of the novel's themes, therefore, is that the protagonist reconnects with his family after years of estrangement both from them and from Earth. NASA's International Cometary Explorer (already in orbit since 1978) also captured pictures of Halley, snapping its shots from 17.3 million miles (28 million km) away. Comet Halley is commonly pronounced / ˈ h æ l i/, rhyming with valley, or / ˈ h eɪ l i/, rhyming with daily. [19] [20] Colin Ronan, one of Edmond Halley's biographers, preferred / ˈ h ɔː l i/, rhyming with crawly. [21] Spellings of Halley's name during his lifetime included Hailey, Haley, Hayley, Halley, Hawley, and Hawly, so its contemporary pronunciation is uncertain, but the version rhyming with valley seems to be preferred by current bearers of the surname. [22] Computation of orbit [ edit ] The orbital path of Halley, against the orbits of the planets ( animation) These include ACE 40 recommended funds Rathbone Strategic Bond (4.5% yield) and Liontrust Sustainable Future Corporate Bond (4.2%), and Super 60 members Jupiter Strategic Bond (4.6%), Royal London Global Bond Opportunities (6%), and M&G Emerging Markets Bond (6.5%).

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Chirikov, Boris V.; Vecheslavov, Vitold V. (1989). "Chaotic dynamics of comet Halley" (PDF). Astronomy and Astrophysics. 221 (1): 146–154. Bibcode: 1989A&A...221..146C. a b c Morbidelli, Alessandro (2005). "Origin and dynamical evolution of comets and their reservoirs". arXiv: astro-ph/0512256. I came in with Halley's comet in 1835. It is coming again next year, and I expect to go out with it. It will be the greatest disappointment of my life if I don't go out with Halley's comet. The Almighty has said, no doubt: 'Now here are these two unaccountable freaks; they came in together, they must go out together.' [111] [112]

Described by Japanese astronomers as being "as large as the half Moon . . . Its colour was white but its rays were red". a b Kronk, Gary W. (1999). Cometography, vol. 1: Ancient-1799. Cambridge University Press. p.14. ISBN 978-0-521-58504-0. Halley's Comet, Comet Halley, or sometimes simply Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–79 years. [1] Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and thus the only naked-eye comet that can appear twice in a human lifetime. [15] It last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061. Vilyev, Mikhail Anatolyevich; 1917; "Investigations on the Theory of Motion of Halley's Comet", cited by Dubyago, Alexander Dmitriyevich; 1961; "The Determination of Orbits", Ch. 1; The Macmillan Company, New York Other notable cometary missions include NASA's Stardust (which captured samples of comet 81P/Wild and returned them to Earth), NASA's Deep Impact (which deliberately sent an impactor into 9P/Tempel on July 4, 2005), and the European Space Agency's Philae (which landed on Comet 67P in 2014.)

If, as has been suggested, the reference by Yehoshua ben Hananiah in b. Horayot 10a to "a star which arises once in seventy years and misleads the sailors" [68] refers to Halley's Comet, it may be a reference to the 66AD appearance, because this apparition was the only one to occur during Yehoshua ben Hananiah's lifetime. [69] After witnessing a bright light in the sky which most historians have identified as Halley's Comet, Zara Yaqob, Emperor of Ethiopia from 1434 to 1468, founded the city of Debre Berhan (tr. City of Light) and made it his capital for the remainder of his reign. [87] 1531 [ edit ]